CN106744138B - Rack-and-pinion lifting device levels electromagnetic pushes safety catch - Google Patents
Rack-and-pinion lifting device levels electromagnetic pushes safety catch Download PDFInfo
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- CN106744138B CN106744138B CN201611221130.3A CN201611221130A CN106744138B CN 106744138 B CN106744138 B CN 106744138B CN 201611221130 A CN201611221130 A CN 201611221130A CN 106744138 B CN106744138 B CN 106744138B
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- Prior art keywords
- rack
- lifting device
- movable rack
- drive
- electromagnetic
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/027—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions to permit passengers to leave an elevator car in case of failure, e.g. moving the car to a reference floor or unlocking the door
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/028—Safety devices separate from control system in case of power failure, for hydraulical lifts, e.g. braking the hydraulic jack
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
- B66D5/30—Operating devices electrical
Abstract
A kind of rack-and-pinion lifting device levels electromagnetic promotion safety catch, including load-supporting part, rail assembly, movable rack, the position-limit mechanism of movable rack, the operating mechanism of movable rack, the control device of the operating mechanism of movable rack, hand-operating unlocking mechanism；It directly contacts perhaps to move horizontally or stop on orbit hole by the operating mechanism manipulation activities rack gear that middle transition load-supporting part contacts the movable rack that load-bearing is configured by horizontal direction with the main load-carrying members of lifting device carriage after entering on-position at the top of movable rack and is maintained at the application position including engaging with lifting device drive rack or the free position that is completely disengaged and having one section of gap with lifting device drive rack；Alleviator self weight is conducive to using electromagnetic driver；It plays and mitigates self weight, save the useful space, significantly improve langding accuracy and the beneficial effect of safeguard protection braking quality.
Description
Technical field
The present invention relates to lifting device safety catch fields, horizontal more particularly to a kind of rack-and-pinion lifting device
Electromagnetic propulsion safety catch.
Background technique
The existing safety catch of rack-and-pinion lifting device is by various methods, to make that gear is driven to stop operating
To realize；But if problem, such as gear teeth damage occur for driving gear, even if gear does not rotate, it cannot guarantee that reliable system
It is dynamic；To ensure safety, pinion and-rack lifting device must configure reliably cope with including driving gear occur problem with
And the safety catch of similar safety problem.
Summary of the invention
The purpose of the present invention is to provide a kind of reliably cope with and problem and similar safety occurs including driving gear
The safety catch of problem.
Fig. 1 is the structural schematic diagram that a kind of rack-and-pinion lifting device levels electromagnetic pushes safety catch, diagram side
60 top of Xiang Weicong rack-and-pinion lifting device carriage sheds top car outside plate finding viewed from above, so for lifting
Device drives rack gear 18 can only see its top, and right movable rack 17 has carried out broken section processing, can see clearly inside it
With the fit structure of right lever 20, the combination of right movable rack and the combination of left movable rack be with rack gear among center chain-dotted line table
The vertical median plane perpendicular to rack gear projection plane shown is the mirror symmetric figure of symmetrical plane, and bracket 8 is half section, activity
The control device of the operating mechanism of rack gear includes electromagnetic driver, and movable rack and lifting device drive rack is shown in Fig. 1
Isolated state, the levels electromagnetic push safety catch to be in free position state；Fig. 2 is gear shown in FIG. 1
Gear rack elevating equipment level electromagnetic propulsion safety catch rack gear engagement be in on-position schematic diagram, projecting direction with
The projecting direction of Fig. 1 is identical；Fig. 3 is the A-A partial sectional view of Fig. 1, and direction is from the eyes front of A-A section (in terms of rack gear direction)
Finding, drawing show the connection of the lever left 10, right lever 20 of the operating mechanism of rail assembly, movable rack and movable rack
Relationship, the state of display, which is movable rack, to be in lifting device drive rack and engages on-position；Fig. 4 be with it is shown in Fig. 3
The movable rack that identical view direction is shown separates the schematic diagram in free position state with lifting device drive rack；Fig. 5
For the B-B partial sectional view of Fig. 1, direction be turned right (in terms of toward centerline direction) from B-B section seen in, drawing is from vertical section side
To show rail assembly, movable rack, movable rack operating mechanism lever left 10 connection relationship；A kind of rack-and-pinion
Lifting device levels electromagnetic pushes safety catch (hereinafter referred to as levels electromagnetic promotion safety catch), characterized in that
Device is configured by horizontal direction, and installation site is in lifting device car top or bottom or other reasonable positions, group
At including load-supporting part, rail assembly, movable rack, the position-limit mechanism of movable rack, the operating mechanism of movable rack, activity
Control device, the hand-operating unlocking mechanism of the operating mechanism of rack gear；The load-supporting part includes direct load-supporting part or centre
Transition load-supporting part；The rail assembly includes track window aperture 12, guide plate 29, load-supporting part and upper rail 16 and lower rail 19
The horizontal rail of formation, the movable rack include left movable rack 13 and right movable rack 17, the left movable rack
13 and right movable rack 17 pass through track window aperture 12, the part of movable rack being associated with the drive rack 18 of lifting device
Tooth form be in and can be engaged with the drive rack 18 of lifting device or isolated position, pass through horizontal on rail assembly move
It is dynamic or be maintained on the position of certain determinations and realize and the engagement of drive rack 18 or separate, the position of the determination,
It is kept completely separate including the application position engaged with lifting device drive rack or with lifting device drive rack and has one small
The free position in section gap, described has a bit of gap, refers to drive rack and movable rack tooth top plane corresponding thereto
Between have the gap 2~5mm；Movable rack and the fit system of horizontal rail are dynamic cooperation, and contact surface is smooth low-friction coefficient
Surface, to be conducive to the movement of movable rack, left movable rack 13 and 17 top of right movable rack after entering on-position with
Load-supporting part and upper rail 16 directly contact load-bearing；The inner face either above or below for the part of movable rack being associated with guide rail
At least one direction is provided with guide groove, (referring to Fig. 5), and the mating part of guide groove and guide plate 29 is dynamic cooperation, to prevent
Outside or inside play of the movable rack to carriage 60；At the top of movable rack after entering on-position with lifting device carriage
Load-supporting part (being load-supporting part and upper rail 16 in Fig. 2, Fig. 4) directly contact or by middle transition load-supporting part contact hold
Weight；The operating mechanism manipulation activities rack gear of movable rack moves horizontally on orbit hole or stops the position for being maintained at certain determinations
It sets, the operating mechanism of the movable rack is arranged in the support structure 28 in the horizontal plane direction of lifting device carriage, institute
The rack-and-pinion lifting device levels electromagnetic stated pushes safety catch, and installation site includes the top or bottom of carriage
Portion or other reasonable positions；The control device of the operating mechanism of the movable rack includes electromagnetic driver, described
Electromagnetic driver is the long-stroke push-and-pull electromagnet pushed for a kind of selected working method, is that a kind of novel Electromagnetic Control is dynamic
Make performer, using power supply power-up control conversion, high-power start, the working method that small-power maintains is more onesize than generating
The old-fashioned electromagnet volume of active force is smaller, self weight is lighter, more power saving；The electromagnetic driver includes electromagnetism push rod 2, electromagnetism
Pusher body 1, the electromagnetic driver main body 1 include the electromagnetic system of electromagnetic driver, control system, the electromagnetism
The control system of pusher is powered and is controlled by lifting device electric control system.
The operating mechanism of the movable rack includes, lever left 10, right lever 20, left fixed shaft 11, right fixed shaft 21,
Movable axis 22, pulling block 9, bracket 8, spring 7, adjusting nut group 6, pull rod 5, jacking block 4, protection block 3；The behaviour of the movable rack
The control device of vertical mechanism includes electromagnetic driver, the electromagnetic driver include electromagnetism push rod 2, electromagnetic driver main body 1,
The electromagnetic driver main body includes the electromagnetic system of electromagnetic driver, control system, the control of the electromagnetic driver
System is powered and is controlled by lifting device electric control system；The electromagnetic driver of the lifting device electric control system
It further include the contactor only controlled by general supply or the combination of relay adjunction tentaculum and energy storage device, institute in control unit
The normally-closed contact of the only contactor that control by general supply or the combination of relay adjunction tentaculum stated be connected across electromagnetic driver with
Between energy storage device, when lifting device obtains electric, normally-closed contact is disconnected, and the connection between electromagnetic driver and energy storage device is also broken
It opens, energy storage device energy storage；When lifting device power loss, other electricity-loss braking devices include that the included power loss band brake apparatus of motor is vertical
Play a role braking, but electromagnetic driver not power loss immediately, the contactor only controlled by general supply or after
The normally-closed contact of electric appliance adjunction tentaculum combination connect electromagnetic driver with energy storage device because coil losing electricity is closed, energy storage dress
Setting to delay time (discharge time) the constant design tuning of electromagnetic driver is that other all electricity-loss braking devices complete braking
The difference of the movement total delay time of the operating mechanism of the braking time and electromagnetic driver and movable rack that need；For example, certain
It is 3.5S, electromagnetic driver and activity that other electricity-loss braking devices of platform lifting device, which individually complete the braking time that braking needs,
The movement total delay time of the operating mechanism of rack gear is 0.3S, then energy storage device designs the delay time constant of electromagnetic driver
Adjusting is (3.5S-0.3S=) 3.2S, after the completion of energy storage device delay, electromagnetic driver power loss；When lifting device general supply is disconnected
(state after discharging including energy storage device energy after original state or power loss), lifting device are in static shape when opening no electricity
State；The actual motion direction of the operating mechanism of the movable rack is that direction defines herein along the horizontal plane to describe clearly,
It is mobile to move forward to 18 direction of drive rack after 1 direction of electromagnetic driver main body is before 18 direction of drive rack is, to electromagnetism
1 direction of pusher body is mobile to move back, (if Fig. 1, Fig. 2 are placed vertically, Forward is exactly the uplink relative to drawing, after
Shifting is exactly the downlink relative to drawing)；The operating mechanism course of work of movable rack is, when electromagnetic driver 1 power loss of main body,
Electromagnetism push rod 2 moves back with protection block 3, jacking block 4 is moved back immediately following protection block 3 and electromagnetism push rod 2 by the elastic force effect of spring 7 and
Pull rod 5, pulling block 9 is driven to move back together, the movable axis 22 being fixed on pulling block 9 follows pulling block 9 to move back, drives lever left 10, is right
20 postbrachium of lever is rotated around left fixed shaft 11, right fixed shaft 21 toward outside, the left activity of forearm drive of lever left 10, right lever 20
Rack gear 13, right movable rack 17 are mobile toward 18 center position of lifting device drive rack, until at a fully engaged with drive rack 18
Application position, the stopping of jacking block 4 moves back, but electromagnetism push rod 2 continues to move back a small distance with protection block 3, reaches and pushes up
Block 4 keeps discontiguous state, described to guarantee left movable rack 13, right movable rack 17 and 18 positive engagement of drive rack
A small distance, refer to 2~5mm distance；When electromagnetic driver main body 1 must be electric, control electromagnetism push rod 2 moves forward, and electromagnetism pushes away
Bar 2 also moves forward with the Forward of protection block 3,4 protected pieces 3 of jacking block of press and pull rod 5, pulling block 9 is driven to move forward together simultaneously
Compressed spring 7, the movable axis 22 being fixed on pulling block 9 follow the Forward of pulling block 9, drive lever left 10,20 postbrachium of right lever around a left side
Fixing axle 11, right fixed shaft 21 are rotated toward inside, lever left 10, the left movable rack 13 of forearm drive of right lever 20, right activity
Rack gear 17 is mobile toward the direction for leaving 18 center of lifting device drive rack, until being kept completely separate with lifting device drive rack 18
And having the free position in a bit of gap, a bit of gap refers to the gap 2~5mm；Adjusting nut group 6 is for adjusting
The pressure of spring 7, bracket 8 support the front position of the front end face of fixed spring 7；It is set if there is abnormal conditions, such as lifting
It is reached the limit of for unexpected power down or because of lifting device overspeed protective device action power dump or because of lifting device
Guarded by location device action is cut off the power etc., and immediately without electricity, other electricity-loss braking devices include lifting device general supply at this time
The included power loss band brake apparatus of motor plays a role braking, after the completion of energy storage device is delayed, electromagnetic driver main body 1 immediately
Power loss, electromagnetism push rod 2 moves back with protection block 3 and is reset to original state, jacking block 4 moves back, left movable rack 13, right movable rack
17 with 18 positive engagement of drive rack, ensure that the safety of lifting device；In the case of emergency braking, left movable rack 13, right work
Carry-over bar 17 may not have at a fully engaged with drive rack 18 at the beginning, and worst situation can when being braking as shown in FIG. 6
Friction catch can be temporarily become under the effect of elasticity at this time there is a situation where the highest point of rack gear and highest point contact, if this
When lifting device whole brake apparatus braking moment add up and be enough to realize braking, braking task is completed；If gone up and down at this time
The braking moment of equipment whole brake apparatus, which adds up, is all not enough to prevent lifting device downslide, (because there is braking moment effect,
So it is slower just to start the meeting of downslide), when slipping down to the position of be staggered highest point and highest point, left movable rack 13, the right side
Movable rack 17 will in the tooth socket for squeezing into drive rack 18 under elastic force promotion (referring to Fig. 7), then as continuing to glide, after
It is continuous to squeeze into, until left movable rack 13, right movable rack 17 and 18 positive engagement of drive rack, implement braking；Fig. 6 is Fig. 1's
The highest point of rack gear and the status diagram of highest point contact, projection side may occur when braking for C-C partial sectional view direction
Xiang Weicong lifting device is observed toward the direction of drive rack 18；Fig. 7 is the same view direction of Fig. 6, when left movable rack, right work
The schematic diagram in tooth socket that carry-over bar squeezes into lifting device drive rack under elastic force promotion.
The hand-operating unlocking mechanism, including, clasp nut control crank 23, clasp nut combination 24, drive screw 25,
Worm screw control crank 26, worm type of reduction gearing 27, wherein clasp nut combination 24 with pulling block 9 be fixedly connected, drive screw
25 with the worm gear of worm type of reduction gearing 27 be fixedly connected, usually, clasp nut control crank 23 be placed in opens a sluice gate position, folding
Nut combination 24 in state of opening a sluice gate, its box thread and the male thread of drive screw 25 without engage, 25 pairs of folding spiral shells of drive screw
The movement of mother's combination 24 has no effect, so that hand-operating unlocking mechanism pushes safety system to rack-and-pinion lifting device levels electromagnetic
The movement of dynamic device has no effect, when lifting device because have a power failure suddenly or other reason emergency brakings rest in cannot be with
When the position of any one stop leveling, clasp nut control crank 23 can be placed in closing position at this time, make clasp nut group
Close 24 in "on" position, its box thread is normally engaged with the male thread of drive screw 25, manual operation worm screw control crank 26,
It rotates worm type of reduction gearing 27 and the rotation of drive screw 25, drive screw 25 is driven to be driven clasp nut combination 24 to Forward
Dynamic, clasp nut combination 24 drives pulling block 9 to move forward, and the movable axis 22 being fixed on pulling block 9 follows the Forward of pulling block 9, drives
Lever left 10,20 postbrachium of right lever are rotated around left fixed shaft 11, right fixed shaft 21 toward inside, before lever left 10, right lever 20
Armband moves left movable rack 13, right movable rack 17 toward the direction movement for leaving 18 center of lifting device drive rack, until with
Lifting device drive rack 18 is kept completely separate and has the free position in a bit of gap；Then Manual jigger mechanism is used, makes to rise
The nearest leveling of equipment drops；The hand-operating unlocking mechanism is necessarily placed at the position that securely and reliably cannot arbitrarily open, and formulates
Rules and regulations and strictly implement, it is ensured that only have qualification, authorized personnel could open and use.
The control system of the electromagnetic driver is powered and is controlled by lifting device electric control system, electrical control
It include that, when lifting device prepares to start, the electric control system of lifting device controls lifting device in the rate-determining steps of system
Drive system driving lifting device moves up a distance element, makes lower plane and right movable rack 17 and the left side of load-supporting part 16
The upper plane of movable rack 13 has a microgap, and the numerical value of the microgap is left movable rack 13, right movable rack 17
With 0.2~0.6 times of 18 sideshake of lifting device drive rack；Then control electromagnetic driver main body 1 obtains electric, drives left movable teeth
Item 13, right movable rack 17 are mobile toward the direction for leaving 18 center of lifting device drive rack, until with lifting device sliding tooth
Item 18 is kept completely separate and has the free position in a bit of gap, is ready for lifting device starting.
Each possibility of lifting device of safety catch is pushed using rack-and-pinion lifting device levels electromagnetic of the invention
The distance between braking anchor point be the integral multiple of its drive rack tooth pitch (p=π m), therefore be configured with safety of the invention
The installation method of the lifting device of brake apparatus includes, when carrying out and install related civil construction early period, it is necessary to by layer
Stand and carry out precise measurement with the difference in height of stop, constructed accordingly to each stop sill and accurately control stop and stop it
Between on sill the difference in height of plane be that the integral multiple of drive rack tooth pitch (p=π m) allows to miss according to the regulation of GB/T10058
Difference is ± 10mm (construction internally controlling requirement should be less than this error amount)；In lifting device installation, it is correct adjust lifting device with
Drive rack is worked in coordination, so that lifting device carriage just stops leveling accuracy from first layer and in median, then after
Stop leveling can meet the requirements, or even when other individual leveling element failures, also can guarantee that stop is flat
Layer is accurate；And the requirement that leveling keeps precision that can be much better than ± 20mm as defined in GB/T10058.
The present invention carries out safeguard protection braking using rack gear engagement system, and avoiding existing friction catch mode may go out
It is existing because security risk caused by friction material abrasion or oil pollution etc., improves the reliability of safety arrestment；Using
Electromagnetic driver is conducive to mitigate self weight；Horizontal direction configuration can have been saved in carriage with top set or bottom setting installation
The useful space；Rack gear engagement leveling keeps precision to can achieve the requirement for being much better than ± 20mm as defined in GB/T10058；Therefore,
It can play and mitigate the beneficial effect that the self weight saving useful space significantly improves langding accuracy and safeguard protection braking quality.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that a kind of rack-and-pinion lifting device levels electromagnetic pushes safety catch.
The rack-and-pinion lifting device levels electromagnetic promotion safety catch that Fig. 2 is Fig. 1 is in the signal of on-position
Figure.
Fig. 3 is the A-A partial sectional view of Fig. 1.
Fig. 4 is in lifting device drive rack for the movable rack that view direction same as shown in Figure 3 is shown and engages
The schematic diagram of on-position.
Fig. 5 is the B-B partial sectional view of Fig. 1.
Fig. 6 is the C-C partial sectional view direction of Fig. 1, and highest point and the highest point contact of rack gear may occur when braking
Status diagram.
Fig. 7 is the same view direction of Fig. 6, when left movable rack, right movable rack are squeezed into lifting under elastic force promotion and set
Schematic diagram in the tooth socket of standby drive rack.
Fig. 8 is the schematic diagram of embodiment 1.
Fig. 9 is the case where safety catch of embodiment 1 brakes lifting device schematic diagram.
Specific embodiment
Embodiment 1, Fig. 8 be embodiment 1 schematic diagram, drawing show be lifting device side appearance, the level
Electromagnetic propulsion safety catch is mounted on the top of pinion and-rack lifting device, is temporarily in free position, lifting device
Situation in preparing operation or being currently running, Fig. 9 are that the levels electromagnetic of embodiment 1 pushes safety catch to lifting device
The case where being braked schematic diagram, (left and right described in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 6, Fig. 7 of front is in lifting device
Face sees toward lifting device side, and Fig. 8, Fig. 9 are to see from the outside toward lifting device side, so left and right directions just reverse phase), it uses
Levels electromagnetic push its internal structure each section of safety catch composition and effect illustrate as shown in Fig. 1~7, and
[0004] section, [0005] section, [0006] section, [0007] Duan Suoshu, due to being related to the matching coordinative of multiple transmission systems, so
It should be specifically noted that manufacturing quality and installation quality when manufacture and installation, what it is including [0008] Duan Suoshu must ready-made include accurate
The difference in height of plane is the related work of the integral multiple of drive rack tooth pitch (p=π m) on sill between control stop and stop,
It, could trial operation after guaranteeing that necessary precision, detection are qualified；The electric control system of lifting device uses embedded system conduct
Master control system, the course of work are that when system is without electricity including disconnecting power switch or accidental power failure etc. set lifting
Standby general supply disconnects, 1 power loss of electromagnetic driver main body, and control electromagnetism push rod 2 moves back, electromagnetism push rod 2 moves back with protection block 3,
Jacking block 4 is moved back and is driven pull rod 5, pulling block 9 to move back together by the elastic force effect of spring 7 immediately following protection block 3 and electromagnetism push rod 2,
The movable axis 22 being fixed on pulling block 9 follows pulling block 9 to move back, drives lever left 10,20 postbrachium of right lever around left fixed shaft 11, the right side
Fixing axle 21 is rotated toward outside, lever left 10, the left movable rack 13 of forearm drive of right lever 20, the past lifting of right movable rack 17
18 center position of device drives rack gear is mobile, until the application position at a fully engaged with drive rack 18, the stopping of jacking block 4 is moved back,
But electromagnetism push rod 2 continues to move back a small distance with protection block 3, reaches and keeps discontiguous state with jacking block 4, to guarantee
Left movable rack 13, right movable rack 17 and 18 positive engagement of drive rack, described a small distance, refer to 2~5mm away from
From；When lifting device prepares to start, the electric control system control lifting device drive system driving lifting of lifting device is set
It is standby to move up a distance element, make the lower plane of load-supporting part 16 and the upper plane of right movable rack 17 and left movable rack 13
There is a microgap, the numerical value of the microgap is left movable rack 13, right movable rack 17 and lifting device drive rack
0.2~0.6 times of 18 sideshakes；Then control electromagnetic driver main body 1 obtains electric, and electromagnetism push rod 2 is with the Forward of protection block 3, jacking block 4
Protected piece 3 of press also move forward and drive pull rod 5, pulling block 9 move forward together simultaneously compressed spring 7, be fixed on pulling block 9
Movable axis 22 follows the Forward of pulling block 9, drives lever left 10,20 postbrachium of right lever around left fixed shaft 11, right fixed shaft 21 toward inside
Rotation, lever left 10, right lever 20 forearm drive left movable rack 13, right movable rack 17 toward leaving lifting device sliding tooth
The direction at 18 center of item is mobile, until the free position in a bit of gap is kept completely separate and had with lifting device drive rack 18,
The a bit of gap, refers to the gap 2~5mm；It is ready for lifting device starting；It needs to stop after lifting device starting
When, the electric control system of lifting device first disconnects lifting device motor power, motor deceleration, when close to stop position
When, such as when close to level position, the electric control system of lifting device controls 1 power loss of electromagnetic driver main body on schedule, control
Electromagnetism push rod 2 processed moves back, until the system of left movable rack 13, right movable rack 17 and 18 positive engagement of lifting device drive rack
Dynamic position；Occur abnormal conditions when if lifting device is currently running, for example, the unexpected power down of lifting device or because lifting set
For overspeed protective device action power dump or because lifting device reaches the limit of guarded by location device action cutting electricity
Source etc., for lifting device general supply without electricity, other electricity-loss braking devices include the included power loss band-type brake dress of motor at this time
The braking that plays a role immediately is set, after the completion of energy storage device delay, 1 power loss of electromagnetic driver main body, electromagnetic driver main body 1 is controlled
Electromagnetism push rod 2 processed moves back, left movable rack 13, right movable rack 17 and 18 positive engagement of lifting device drive rack, ensure that
The safety of lifting device；When lifting device because have a power failure suddenly or other reason emergency brakings rest in cannot be with any one
When the position of stop leveling, at this time clasp nut control crank 23 can be placed in closing position, be in clasp nut combination 24
"on" position, its box thread normally engage with the male thread of drive screw 25, manual operation worm screw control crank 26, make worm gear snail
Bar retarder 27 rotates and the rotation of drive screw 25, drive screw 25 is driven to be driven 24 forward movement of clasp nut combination, folding
Nut combination 24 drives pulling block 9 to move forward, and the movable axis 22 being fixed on pulling block 9 follows the Forward of pulling block 9, drives lever left
10, right 20 postbrachium of lever is rotated around left fixed shaft 11, right fixed shaft 21 toward inside, the forearm drive of lever left 10, right lever 20
Left movable rack 13, right movable rack 17 are mobile toward the direction for leaving 18 center of lifting device drive rack, until setting with lifting
Standby drive rack 18 is kept completely separate and has the free position in a bit of gap；Then Manual jigger mechanism is used, lifting device is made
Slowly steady nearest leveling；The hand-operating unlocking mechanism is necessarily placed at the position that securely and reliably cannot arbitrarily open, and formulates
Rules and regulations and strictly implement, it is ensured that only have qualification, authorized personnel could open and use.
Embodiment 2, Fig. 8, Fig. 9 are also the schematic diagram of embodiment 2, it is shown that one kind is mounted with level of the present invention
The elevator of electromagnetic propulsion safety catch, the levels electromagnetic of use push its internal structure each section of safety catch composition
And the explanation of effect is seen shown in Fig. 1~7, and [0004] section, [0005] section, [0006] section, [0007] Duan Suoshu, work is former
It manages described identical as [0019] section.
For the benefit of reader understands the present invention, and this specification illustrates some specific structures and data, these be all for
Explanation and it is non-limiting, various changes, replacement and the change done within the scope of the basic thought of the claims in the present invention are produced
Raw all or part of equivalent, all within the scope of the invention as claimed.
Claims (6)
1. a kind of rack-and-pinion lifting device levels electromagnetic pushes safety catch, characterized in that device is matched by horizontal direction
It sets, in lifting device car top or bottom or other reasonable positions, composition includes installation site, load-supporting part,
Rail assembly, movable rack, the position-limit mechanism of movable rack, the operating mechanism of movable rack, movable rack operating mechanism
Control device, hand-operating unlocking mechanism；The load-supporting part includes direct load-supporting part or middle transition load-supporting part；It is described
Rail assembly include horizontal rail that track window aperture, guide plate, load-supporting part and upper rail and lower rail are formed, the activity
Rack gear includes right movable rack and left movable rack, and the right movable rack and left movable rack pass through track window aperture, living
The tooth form for the part of carry-over bar being associated with the drive rack of lifting device is in and can nibble with the drive rack of lifting device
It closes and realizes and drive on position of the perhaps isolated position by the way that certain determinations are moved horizontally or be maintained on rail assembly
The engagement or separation of rack gear, the position of the determination, including the application position that is engaged with lifting device drive rack or
The free position in a bit of gap is kept completely separate and had with lifting device drive rack, and described has a bit of gap, refers to
Drive rack and movable rack tooth top interplanar corresponding thereto have the gap 2~5mm；The cooperation side of movable rack and horizontal rail
Formula is dynamic cooperation, and contact surface is smooth low coefficient of friction surfaces, to be conducive to the movement of movable rack, right movable rack and a left side
Load-bearing is directly contacted with load-supporting part and upper rail after entering on-position at the top of movable rack；The limit of the movable rack
Mechanism, which includes that at least one direction of the inner face either above or below for the part of movable rack being associated with guide rail is provided with, to be led
To slot, the mating part of guide groove and guide plate is dynamic cooperation, to prevent outside or inside play of the movable rack to carriage；
Middle transition is directly contacted or passed through with the load-supporting part of lifting device carriage after entering on-position at the top of movable rack
Load-supporting part contacts load-bearing；The operating mechanism manipulation activities rack gear of movable rack moves horizontally on orbit hole or stops holding
On the position of certain determinations, the operating mechanism of the movable rack is arranged in the branch in the horizontal plane direction of lifting device carriage
Hold in structure, the rack-and-pinion lifting device horizontal safety catch, installation site include carriage top or
Person bottom or other reasonable positions；The control device of the operating mechanism of the movable rack includes electromagnetic driver, institute
The electromagnetic driver stated is the long-stroke push-and-pull electromagnet pushed for a kind of selected working method, is powered on control conversion using power supply,
High-power start, the working method that small-power maintains；The electromagnetic driver includes electromagnetism push rod, electromagnetic driver main body,
The electromagnetic driver main body includes the electromagnetic system of electromagnetic driver, control system, the control of the electromagnetic driver
System is powered and is controlled by lifting device electric control system.
2. rack-and-pinion lifting device levels electromagnetic according to claim 1 pushes safety catch, characterized in that institute
The operating mechanism for the movable rack stated includes, lever left, right lever, left fixed shaft, right fixed shaft, movable axis, pulling block, bracket,
Spring, adjusting nut group, pull rod, jacking block, protection block；The control of the electromagnetic driver of the lifting device electric control system
It further include the only contactor that control by general supply or relay adjunction tentaculum combines and energy storage device in unit, it is described
The normally-closed contact of contactor or relay adjunction the tentaculum combination only controlled by general supply is connected across electromagnetic driver and energy storage
Between device, when lifting device obtains electric, normally-closed contact is disconnected, and the connection between electromagnetic driver and energy storage device also disconnects, and is stored up
It can device energy storage；When lifting device power loss, other electricity-loss braking devices include that the included power loss band brake apparatus of motor is sent out immediately
Wave effect braking, but electromagnetic driver not power loss immediately, the contactor or relay only controlled by general supply
The normally-closed contact power loss closure of adjunction tentaculum combination, connect electromagnetic driver with energy storage device, energy storage device is to electromagnetic propulsion
The delay time constant design tuning of device is that the braking time that other all electricity-loss braking devices completion brakings need is pushed away with electromagnetism
The difference of the movement total delay time of the operating mechanism of dynamic device and movable rack；When lifting device general supply is disconnected without electricity, rise
Drop equipment remains static；The actual motion direction of the operating mechanism of the movable rack is direction along the horizontal plane, driving
It is mobile to move forward to drive rack direction after electromagnetic driver main direction is before rack gear direction is, to electromagnetic driver main body
Mobile direction is to move back；The operating mechanism course of work of movable rack is, when electromagnetic driver main body power loss, electromagnetism push rod band
Protection block moves back, jacking block by the elastic force effect of spring is moved back and driven pull rod, pulling block one immediately following protection block and electromagnetism push rod
It rises and moves back, the movable axis being fixed on pulling block follows pulling block to move back, drives lever left, right lever lower arm solid around left fixed shaft, the right side
Dead axle is rotated toward outside, lever left, right lever upper arm drive left movable rack, right movable rack toward lifting device drive rack
Center position is mobile, until the application position at a fully engaged with drive rack, jacking block stopping is moved back, but electromagnetism push rod is with guarantor
Protecting block continues to move back a small distance, reaches and keeps discontiguous state with jacking block, to guarantee left movable rack, right movable rack
With drive rack positive engagement, described a small distance refers to 2~5mm distance；When electromagnetic driver main body obtains electric, control
Electromagnetism pushrod advances processed, electromagnetism push rod also move forward with protection block Forward, protected piece of jacking block of press and drive pull rod, draw
Block moves forward together while compressed spring, and the movable axis being fixed on pulling block follows pulling block Forward, drives lever left, right lever lower arm
It is rotated around left fixed shaft, right fixed shaft toward inside, lever left, the left movable rack of upper arm drive, the right movable rack of right lever are past
The direction for leaving lifting device drive rack center is mobile, until being kept completely separate with lifting device drive rack and having a bit of
The free position of gap；Adjusting nut group is used for the pressure of adjustment spring, and bracket supports the front position of the front end face of fixed spring；
If there is abnormal conditions, including the unexpected power down of lifting device or because lifting device overspeed protective device movement cutting electricity
Source or because lifting device reaches the limit of guarded by location device action and cuts off the power, at this time lifting device general supply immediately without
Electricity, other electricity-loss braking devices include that the included power loss band brake apparatus of motor plays a role braking immediately, are prolonged in energy storage device
When after the completion of, electromagnetic driver main body power loss, electromagnetism push rod is moved back with protection block, jacking block moves back, left movable rack, right activity
Rack gear and drive rack positive engagement, ensure that the safety of lifting device.
3. rack-and-pinion lifting device levels electromagnetic according to claim 1 pushes safety catch, characterized in that institute
The hand-operating unlocking mechanism stated, including, clasp nut control crank, clasp nut combination, drive screw, worm screw control crank, snail
Worm and gear retarder, wherein clasp nut combination with pulling block be fixedly connected, the worm gear of drive screw and worm type of reduction gearing
To be fixedly connected, usual, clasp nut control crank, which is placed in, opens a sluice gate position, clasp nut combination in state of opening a sluice gate, its female spiral shell
Line has no effect to the movement that clasp nut combines without engagement, drive screw with the male thread of drive screw, to solve manually
Latch mechanism to rack-and-pinion lifting device levels electromagnetic push safety catch movement have no effect, when lifting device because
For have a power failure suddenly or other reason emergency brakings rest in cannot be with the position of any one stop leveling when, at this time can be opening
Nut control crank is closed to be placed in closing position, make clasp nut combination in "on" position, the public affairs of its box thread and drive screw
Screw thread normally engages, manual operation worm screw control crank, rotates worm type of reduction gearing and drive drive screw rotation, transmission
The combination of screw drive clasp nut moves forward, clasp nut combination drives pulling block to move forward, the activity being fixed on pulling block
Axis follows pulling block Forward, lever left, right lever postbrachium is driven to rotate around left fixed shaft, right fixed shaft toward inside, lever left, You Gang
The forearm of bar drives left movable rack, right movable rack mobile toward the direction for leaving lifting device drive rack center, until with
Lifting device drive rack is kept completely separate and has the free position in a bit of gap；Then Manual jigger mechanism is used, makes to go up and down
The nearest leveling of equipment；The hand-operating unlocking mechanism is necessarily placed at the position that securely and reliably cannot arbitrarily open, and has formulated rule
Chapter system and strictly implement, it is ensured that only have qualification, authorized personnel could open and use.
4. rack-and-pinion lifting device levels electromagnetic according to claim 1 pushes safety catch, characterized in that institute
The control system for the electromagnetic driver stated is powered and is controlled by lifting device electric control system, the control of electric control system
It include that, when lifting device prepares to start, the electric control system control lifting device drive system of lifting device is driven in step
Dynamic lifting device moves up a distance element, puts down the lower plane of load-supporting part with right movable rack and the upper of left movable rack
There is a microgap in face, and the numerical value of the microgap is left movable rack, right movable rack and lifting device drive rack side
0.2~0.6 times of gap；Then control electromagnetic driver main body obtains electric, drives left movable rack, right movable rack are past to leave lifting
The direction at device drives rack gear center is mobile, until the freedom in a bit of gap is kept completely separate and had with lifting device drive rack
Position is ready for lifting device starting.
5. rack-and-pinion lifting device levels electromagnetic according to claim 1 pushes safety catch, characterized in that match
Being equipped with rack-and-pinion lifting device levels electromagnetic of the invention pushes the installation method of the lifting device of safety catch to include,
When carrying out and install related civil construction early period, it is necessary to carry out precise measurement by the difference in height to stop and stop, accordingly
The difference in height that plane on sill between stop and stop is constructed and accurately controlled to each stop sill is drive rack tooth pitch
Integral multiple, it is correct to adjust working in coordination for lifting device and drive rack in lifting device installation so that lifting device sedan-chair
Leveling accuracy is just stopped from first layer and in median in compartment.
6. a kind of elevator, characterized in that install and use gear teeth described in any claim in claim 1- claim 5
Lifting device levels electromagnetic pushes safety catch.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611221130.3A CN106744138B (en) | 2016-12-27 | 2016-12-27 | Rack-and-pinion lifting device levels electromagnetic pushes safety catch |
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| CN201611221130.3A CN106744138B (en) | 2016-12-27 | 2016-12-27 | Rack-and-pinion lifting device levels electromagnetic pushes safety catch |
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| CN106744138B true CN106744138B (en) | 2019-03-12 |
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| US7909142B2 (en) * | 2006-05-19 | 2011-03-22 | Hydro-Mobile Inc. | Braking device for elevating platform assembly |
| CN101003343A (en) * | 2006-12-30 | 2007-07-25 | 济南重工股份有限公司 | Dooly compartment self going type elevator |
| US8210319B2 (en) * | 2007-08-31 | 2012-07-03 | John W. Boyd | Hydraulic elevating platform assembly |
| CN101172554B (en) * | 2007-09-27 | 2011-08-03 | 日立电梯（中国）有限公司 | Bidirectional safety tongs device for elevator |
| CN102259783B (en) * | 2011-03-17 | 2013-04-10 | 太仓市康辉科技发展有限公司 | Mechanical device stopping in case of overspeed |
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